h3lladvocate
New Member
So, today I went out and bought 5 gates, AND, OR, NOT, XOR, and NAND, all of which being quad, 2-input positive gates. Now, im really new to electronics. I've taken E&M physics so i know al' the stuff behind circuitry, but this is my first "project". Anyways, from what i've seen online, which hasn't been much help, ive connected the gates correctly, but i cant get any of the gates to work properly. For instance, my OR gate behaves like this
A B O
0 0 1
1 0 1
0 1 1
1 1 1
so no matter what, the OR gate outputs 1... which is bad. I get this similar results with all my gates, not the exact same, but behaving against the truth table. So i guess my question is this. Can someone either A, tell me how to use the gate properly, because i might not me... or B, tell me if my parts are just faulty and what to do. The parts are NTE74LS series, so NTE is the manufacturer, and i got it from Fry's, if you know what that is. Please help!
A B O
0 0 1
1 0 1
0 1 1
1 1 1
so no matter what, the OR gate outputs 1... which is bad. I get this similar results with all my gates, not the exact same, but behaving against the truth table. So i guess my question is this. Can someone either A, tell me how to use the gate properly, because i might not me... or B, tell me if my parts are just faulty and what to do. The parts are NTE74LS series, so NTE is the manufacturer, and i got it from Fry's, if you know what that is. Please help!